/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:26:38,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:26:38,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:26:38,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:26:38,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:26:38,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:26:38,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:26:38,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:26:38,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:26:38,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:26:38,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:26:38,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:26:38,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:26:38,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:26:38,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:26:38,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:26:38,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:26:38,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:26:38,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:26:38,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:26:38,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:26:38,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:26:38,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:26:38,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:26:38,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:26:38,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:26:38,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:26:38,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:26:38,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:26:38,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:26:38,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:26:38,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:26:38,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:26:38,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:26:38,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:26:38,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:26:38,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:26:38,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:26:38,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:26:38,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:26:38,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:26:38,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:26:38,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:26:38,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:26:38,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:26:38,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:26:38,806 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:26:38,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:26:38,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:26:38,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:26:38,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:26:38,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:26:38,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:26:38,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:26:38,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:26:38,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:26:38,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:26:38,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:26:38,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:26:38,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:26:38,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:26:38,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:26:38,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:26:38,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:26:38,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:26:38,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:26:38,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:26:38,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:26:38,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:26:38,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:26:38,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:26:38,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:26:39,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:26:39,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:26:39,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:26:39,295 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:26:39,295 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:26:39,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2020-10-29 12:26:39,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57cfd3abc/701dbfd069e6443897cea5c65befd88c/FLAGd140c0fc8 [2020-10-29 12:26:40,016 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:26:40,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2020-10-29 12:26:40,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57cfd3abc/701dbfd069e6443897cea5c65befd88c/FLAGd140c0fc8 [2020-10-29 12:26:40,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57cfd3abc/701dbfd069e6443897cea5c65befd88c [2020-10-29 12:26:40,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:26:40,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:26:40,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:26:40,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:26:40,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:26:40,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:26:40" (1/1) ... [2020-10-29 12:26:40,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2822bfa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:40, skipping insertion in model container [2020-10-29 12:26:40,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:26:40" (1/1) ... [2020-10-29 12:26:40,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:26:40,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:26:40,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:26:40,632 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:26:40,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:26:40,760 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:26:40,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:40 WrapperNode [2020-10-29 12:26:40,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:26:40,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:26:40,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:26:40,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:26:40,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:40" (1/1) ... [2020-10-29 12:26:40,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:40" (1/1) ... [2020-10-29 12:26:40,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:40" (1/1) ... [2020-10-29 12:26:40,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:40" (1/1) ... [2020-10-29 12:26:40,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:40" (1/1) ... [2020-10-29 12:26:40,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:40" (1/1) ... [2020-10-29 12:26:40,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:40" (1/1) ... [2020-10-29 12:26:40,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:26:40,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:26:40,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:26:40,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:26:40,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:26:40,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:26:40,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:26:40,962 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:26:40,962 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:26:40,962 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:26:40,962 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:26:40,963 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:26:40,963 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:26:40,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:26:40,963 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:26:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:26:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:26:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:26:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:26:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:26:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:26:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:26:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:26:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:26:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:26:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:26:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:26:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:26:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:26:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:26:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:26:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:26:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:26:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:26:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:26:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:26:41,783 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:26:41,783 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:26:41,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:26:41 BoogieIcfgContainer [2020-10-29 12:26:41,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:26:41,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:26:41,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:26:41,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:26:41,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:26:40" (1/3) ... [2020-10-29 12:26:41,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbcdfac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:26:41, skipping insertion in model container [2020-10-29 12:26:41,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:40" (2/3) ... [2020-10-29 12:26:41,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbcdfac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:26:41, skipping insertion in model container [2020-10-29 12:26:41,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:26:41" (3/3) ... [2020-10-29 12:26:41,794 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2020-10-29 12:26:41,807 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:26:41,813 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:26:41,827 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:26:41,859 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:26:41,859 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:26:41,859 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:26:41,859 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:26:41,859 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:26:41,859 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:26:41,860 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:26:41,860 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:26:41,880 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-10-29 12:26:41,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 12:26:41,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:26:41,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:26:41,891 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:26:41,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:26:41,898 INFO L82 PathProgramCache]: Analyzing trace with hash -929668031, now seen corresponding path program 1 times [2020-10-29 12:26:41,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:26:41,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471997979] [2020-10-29 12:26:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:26:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:42,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:42,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:26:42,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:42,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-29 12:26:42,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:42,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:42,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:42,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 12:26:42,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:26:42,998 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:26:43,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:26:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:43,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:43,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:26:43,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 12:26:43,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:43,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:43,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:43,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:26:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:43,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:43,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:43,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:43,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:43,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:26:43,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:43,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:43,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:43,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 12:26:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:43,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:43,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:26:43,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:43,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 12:26:43,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:43,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:43,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:26:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:43,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:26:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:26:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:43,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:43,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:43,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:26:43,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:43,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:26:43,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:43,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:26:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:43,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:43,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 12:26:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:43,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:43,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:43,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:26:43,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:43,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:26:43,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:43,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:43,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:43,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:26:43,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:43,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:43,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:26:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:43,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:43,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:43,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:43,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:43,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:26:43,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:43,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:43,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:43,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:26:43,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471997979] [2020-10-29 12:26:43,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:26:43,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:26:43,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793549596] [2020-10-29 12:26:43,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:26:43,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:26:43,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:26:43,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:26:43,376 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 6 states. [2020-10-29 12:26:44,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:26:44,244 INFO L93 Difference]: Finished difference Result 154 states and 217 transitions. [2020-10-29 12:26:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:26:44,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-29 12:26:44,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:26:44,256 INFO L225 Difference]: With dead ends: 154 [2020-10-29 12:26:44,256 INFO L226 Difference]: Without dead ends: 85 [2020-10-29 12:26:44,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:26:44,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-29 12:26:44,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-29 12:26:44,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 12:26:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2020-10-29 12:26:44,327 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 50 [2020-10-29 12:26:44,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:26:44,327 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2020-10-29 12:26:44,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:26:44,327 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2020-10-29 12:26:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 12:26:44,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:26:44,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:26:44,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:26:44,333 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:26:44,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:26:44,334 INFO L82 PathProgramCache]: Analyzing trace with hash -270136509, now seen corresponding path program 1 times [2020-10-29 12:26:44,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:26:44,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712444124] [2020-10-29 12:26:44,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:26:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:44,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:44,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:44,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:26:44,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:44,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-29 12:26:44,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:44,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:26:44,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:26:44,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:26:44,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:45,165 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:26:45,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:26:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:45,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:45,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:45,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:26:45,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:45,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:26:45,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:45,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:45,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:45,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:26:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:45,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:45,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:45,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:45,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:26:45,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:45,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:26:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:26:45,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:45,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 12:26:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:45,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:45,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:45,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:26:45,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:45,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:26:45,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:45,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:45,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:45,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:26:45,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:45,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:45,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:26:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:45,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:45,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:45,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:26:45,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:45,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:26:45,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:45,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:26:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:45,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 12:26:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:45,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:45,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:26:45,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:45,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:26:45,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:45,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:26:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:45,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:45,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:26:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:45,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:45,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:45,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:45,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:45,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:26:45,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:45,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:45,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:45,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:26:45,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712444124] [2020-10-29 12:26:45,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:26:45,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:26:45,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812767691] [2020-10-29 12:26:45,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:26:45,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:26:45,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:26:45,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:26:45,563 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 10 states. [2020-10-29 12:26:45,890 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 12:26:46,177 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 12:26:47,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:26:47,720 INFO L93 Difference]: Finished difference Result 155 states and 216 transitions. [2020-10-29 12:26:47,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:26:47,721 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-29 12:26:47,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:26:47,725 INFO L225 Difference]: With dead ends: 155 [2020-10-29 12:26:47,725 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 12:26:47,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:26:47,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 12:26:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2020-10-29 12:26:47,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 12:26:47,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 105 transitions. [2020-10-29 12:26:47,747 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 105 transitions. Word has length 50 [2020-10-29 12:26:47,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:26:47,747 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 105 transitions. [2020-10-29 12:26:47,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:26:47,747 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 105 transitions. [2020-10-29 12:26:47,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:26:47,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:26:47,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:26:47,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:26:47,750 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:26:47,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:26:47,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1818227069, now seen corresponding path program 1 times [2020-10-29 12:26:47,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:26:47,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261944163] [2020-10-29 12:26:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:26:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:47,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:47,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:50,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:50,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 12:26:50,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:26:50,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3062 [2020-10-29 12:26:50,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:50,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:26:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 12:26:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:26:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:51,140 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:26:51,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:26:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:51,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:51,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:51,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:26:51,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:26:51,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:51,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:51,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:51,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:26:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:51,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:51,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:51,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:26:51,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:51,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:26:51,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:51,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:26:51,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:51,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:26:51,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:51,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:26:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:51,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:51,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:51,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:26:51,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:51,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:26:51,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:51,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:26:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:26:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:26:51,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:51,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:26:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:51,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:51,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:51,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:26:51,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:51,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:26:51,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:51,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:26:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:26:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:26:51,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:51,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:26:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:51,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:51,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:51,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:26:51,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 12:26:51,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:51,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:51,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:26:51,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:26:51,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:26:51,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 12:26:51,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:26:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:51,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:51,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:51,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:51,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:51,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:26:51,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:51,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:26:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:26:51,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:26:51,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261944163] [2020-10-29 12:26:51,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:26:51,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:26:51,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403742532] [2020-10-29 12:26:51,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:26:51,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:26:51,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:26:51,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:26:51,608 INFO L87 Difference]: Start difference. First operand 85 states and 105 transitions. Second operand 14 states. [2020-10-29 12:26:51,938 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 12:26:52,208 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 12:26:52,466 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 12:26:54,595 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 12:26:54,863 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 12:26:55,132 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 12:26:55,489 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 12:26:55,796 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 12:27:00,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:00,993 INFO L93 Difference]: Finished difference Result 592 states and 812 transitions. [2020-10-29 12:27:00,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 12:27:00,994 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-29 12:27:00,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:01,004 INFO L225 Difference]: With dead ends: 592 [2020-10-29 12:27:01,005 INFO L226 Difference]: Without dead ends: 537 [2020-10-29 12:27:01,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=758, Invalid=2782, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 12:27:01,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-10-29 12:27:01,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 513. [2020-10-29 12:27:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-29 12:27:01,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 704 transitions. [2020-10-29 12:27:01,122 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 704 transitions. Word has length 65 [2020-10-29 12:27:01,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:01,122 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 704 transitions. [2020-10-29 12:27:01,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:27:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 704 transitions. [2020-10-29 12:27:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 12:27:01,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:01,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:27:01,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:27:01,128 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:01,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:01,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1895405171, now seen corresponding path program 1 times [2020-10-29 12:27:01,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:01,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44631510] [2020-10-29 12:27:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:01,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:01,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:01,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:02,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:05,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:05,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 12:27:05,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:27:05,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4019 [2020-10-29 12:27:05,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:05,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:05,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:27:05,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:27:05,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 12:27:05,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:05,428 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:27:05,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:27:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:05,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:05,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:05,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:27:05,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:05,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:27:05,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:05,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:05,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:27:05,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:27:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:05,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:05,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:05,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:27:05,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:05,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:27:05,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:05,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 12:27:05,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:05,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:27:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:05,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:05,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:05,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:05,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:05,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:27:05,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:05,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:05,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:27:05,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:27:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:27:05,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:05,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:27:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:05,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:05,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:05,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:05,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:27:05,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:05,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:27:05,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:27:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:27:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:05,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:05,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:05,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:05,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:05,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:27:05,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:05,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:27:05,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:05,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:27:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:05,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:05,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:05,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:05,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:27:05,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:27:05,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:27:05,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:05,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:27:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:27:05,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:27:05,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44631510] [2020-10-29 12:27:05,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:27:05,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:27:05,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806232746] [2020-10-29 12:27:05,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:27:05,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:27:05,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:27:05,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:27:05,765 INFO L87 Difference]: Start difference. First operand 513 states and 704 transitions. Second operand 11 states. [2020-10-29 12:27:06,080 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 12:27:06,693 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 12:27:08,587 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 12:27:09,162 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-29 12:27:09,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:09,671 INFO L93 Difference]: Finished difference Result 2258 states and 3154 transitions. [2020-10-29 12:27:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 12:27:09,673 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-29 12:27:09,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:09,695 INFO L225 Difference]: With dead ends: 2258 [2020-10-29 12:27:09,695 INFO L226 Difference]: Without dead ends: 1775 [2020-10-29 12:27:09,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:27:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2020-10-29 12:27:09,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1766. [2020-10-29 12:27:09,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1766 states. [2020-10-29 12:27:09,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2415 transitions. [2020-10-29 12:27:09,921 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2415 transitions. Word has length 67 [2020-10-29 12:27:09,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:09,922 INFO L481 AbstractCegarLoop]: Abstraction has 1766 states and 2415 transitions. [2020-10-29 12:27:09,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:27:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2415 transitions. [2020-10-29 12:27:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 12:27:09,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:09,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:27:09,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:27:09,940 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:09,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:09,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1135491653, now seen corresponding path program 1 times [2020-10-29 12:27:09,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:09,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744525351] [2020-10-29 12:27:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:10,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:10,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:11,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:11,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 12:27:11,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:27:11,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1686 [2020-10-29 12:27:11,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:11,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:11,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:27:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 12:27:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:27:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:11,924 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:27:11,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:27:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:11,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:11,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:11,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:27:11,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:11,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:27:11,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:11,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:11,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:11,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:27:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:11,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:11,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:11,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:27:11,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:11,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:27:11,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:11,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:27:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:27:11,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:12,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:27:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:12,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:12,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:12,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:12,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:12,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 12:27:12,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:12,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:12,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:27:12,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:27:12,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:27:12,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:12,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:27:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:12,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:12,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:12,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:12,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:12,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:27:12,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:12,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:27:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:27:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:27:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:12,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:27:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:12,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:12,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:12,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 12:27:12,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:12,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:12,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:27:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:27:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:27:12,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:12,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:27:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:12,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:12,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:12,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:27:12,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:12,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:27:12,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:12,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:12,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:27:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:27:12,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:12,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:27:12,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744525351] [2020-10-29 12:27:12,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:27:12,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 12:27:12,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392604330] [2020-10-29 12:27:12,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:27:12,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:27:12,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:27:12,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:27:12,448 INFO L87 Difference]: Start difference. First operand 1766 states and 2415 transitions. Second operand 13 states. [2020-10-29 12:27:12,812 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 12:27:13,073 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 12:27:13,367 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 12:27:14,176 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 12:27:15,122 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:27:16,306 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-29 12:27:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:18,964 INFO L93 Difference]: Finished difference Result 3916 states and 5399 transitions. [2020-10-29 12:27:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 12:27:18,965 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-29 12:27:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:18,981 INFO L225 Difference]: With dead ends: 3916 [2020-10-29 12:27:18,981 INFO L226 Difference]: Without dead ends: 2180 [2020-10-29 12:27:18,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=520, Invalid=1736, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 12:27:18,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2020-10-29 12:27:19,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2053. [2020-10-29 12:27:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2053 states. [2020-10-29 12:27:19,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2806 transitions. [2020-10-29 12:27:19,201 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2806 transitions. Word has length 67 [2020-10-29 12:27:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:19,202 INFO L481 AbstractCegarLoop]: Abstraction has 2053 states and 2806 transitions. [2020-10-29 12:27:19,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:27:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2806 transitions. [2020-10-29 12:27:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 12:27:19,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:19,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:27:19,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:27:19,205 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:19,206 INFO L82 PathProgramCache]: Analyzing trace with hash 789621961, now seen corresponding path program 1 times [2020-10-29 12:27:19,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:19,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083839347] [2020-10-29 12:27:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:19,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:19,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:21,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:24,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:24,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 12:27:24,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:27:24,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:27:24,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:24,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:24,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:27:24,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:27:24,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:27:24,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:24,603 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:27:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:27:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:24,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:24,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:24,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:27:24,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:24,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:27:24,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:24,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:24,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:24,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:27:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:24,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:27:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:24,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:24,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:24,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:27:24,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:24,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:27:24,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:24,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:24,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:27:24,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:27:24,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:24,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:27:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:24,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:24,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:24,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:27:24,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:24,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:27:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:24,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:27:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:24,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:24,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:24,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:24,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:24,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:27:24,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:24,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:27:24,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:24,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:27:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:24,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:24,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:24,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:27:24,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:27:24,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:24,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:27:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:27:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:27:24,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:24,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:27:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:24,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:24,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:24,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:24,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:24,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:27:24,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:24,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:27:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:24,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:27:24,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083839347] [2020-10-29 12:27:24,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:27:24,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 12:27:24,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214808975] [2020-10-29 12:27:24,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:27:24,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:27:24,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:27:24,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:27:24,988 INFO L87 Difference]: Start difference. First operand 2053 states and 2806 transitions. Second operand 13 states. [2020-10-29 12:27:25,286 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 12:27:25,609 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 12:27:26,164 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 12:27:26,949 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 12:27:28,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:28,340 INFO L93 Difference]: Finished difference Result 4423 states and 5985 transitions. [2020-10-29 12:27:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:27:28,341 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-29 12:27:28,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:28,357 INFO L225 Difference]: With dead ends: 4423 [2020-10-29 12:27:28,357 INFO L226 Difference]: Without dead ends: 2400 [2020-10-29 12:27:28,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:27:28,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2020-10-29 12:27:28,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2166. [2020-10-29 12:27:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2166 states. [2020-10-29 12:27:28,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 2957 transitions. [2020-10-29 12:27:28,554 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 2957 transitions. Word has length 67 [2020-10-29 12:27:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:28,554 INFO L481 AbstractCegarLoop]: Abstraction has 2166 states and 2957 transitions. [2020-10-29 12:27:28,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:27:28,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 2957 transitions. [2020-10-29 12:27:28,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 12:27:28,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:28,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:27:28,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:27:28,556 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:28,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1902423673, now seen corresponding path program 1 times [2020-10-29 12:27:28,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:28,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100896791] [2020-10-29 12:27:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:28,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:29,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:32,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:32,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 12:27:32,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:27:32,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3771 [2020-10-29 12:27:32,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:32,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:27:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:27:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 12:27:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:32,602 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:27:32,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:27:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:32,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:32,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:32,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:27:32,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:32,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:27:32,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:32,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:27:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:32,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:27:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:32,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:32,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:27:32,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:32,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:27:32,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:32,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:27:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:27:32,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:32,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:27:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:32,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:32,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:32,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:32,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:27:32,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:32,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:32,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:32,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:32,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:27:32,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:27:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:32,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:32,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:32,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:27:32,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:32,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:27:32,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:32,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:27:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:27:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:27:32,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:32,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:27:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:32,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:32,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:32,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:27:32,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:32,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:27:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:32,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:32,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:27:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:32,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:32,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:32,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:32,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:27:32,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:32,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:27:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:32,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:27:32,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100896791] [2020-10-29 12:27:32,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:27:32,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 12:27:32,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925502136] [2020-10-29 12:27:32,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:27:32,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:27:32,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:27:32,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:27:32,928 INFO L87 Difference]: Start difference. First operand 2166 states and 2957 transitions. Second operand 13 states. [2020-10-29 12:27:33,479 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-29 12:27:33,780 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 12:27:34,597 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-29 12:27:34,765 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-29 12:27:35,074 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-29 12:27:35,304 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-29 12:27:35,491 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-29 12:27:35,742 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-29 12:27:36,160 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-29 12:27:36,396 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-29 12:27:36,624 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-29 12:27:36,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:36,878 INFO L93 Difference]: Finished difference Result 4179 states and 5730 transitions. [2020-10-29 12:27:36,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:27:36,879 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-29 12:27:36,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:36,897 INFO L225 Difference]: With dead ends: 4179 [2020-10-29 12:27:36,897 INFO L226 Difference]: Without dead ends: 2756 [2020-10-29 12:27:36,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:27:36,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2020-10-29 12:27:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2340. [2020-10-29 12:27:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2340 states. [2020-10-29 12:27:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 3204 transitions. [2020-10-29 12:27:37,151 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 3204 transitions. Word has length 67 [2020-10-29 12:27:37,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:37,151 INFO L481 AbstractCegarLoop]: Abstraction has 2340 states and 3204 transitions. [2020-10-29 12:27:37,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:27:37,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 3204 transitions. [2020-10-29 12:27:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 12:27:37,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:37,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:27:37,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:27:37,153 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:37,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1592775635, now seen corresponding path program 1 times [2020-10-29 12:27:37,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:37,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081230188] [2020-10-29 12:27:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:37,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:37,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:37,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:37,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:37,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:41,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:41,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 12:27:41,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:27:41,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4210 [2020-10-29 12:27:41,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:41,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:41,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:27:41,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:27:41,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 12:27:41,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:41,651 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:27:41,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:27:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:41,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:41,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:41,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:27:41,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:41,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:27:41,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:41,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:41,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:27:41,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:41,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:27:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:41,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:41,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:27:41,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:41,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:27:41,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:41,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:27:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:27:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:41,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:27:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:41,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:41,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:41,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:27:41,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:27:41,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:41,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:27:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:27:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:27:41,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:41,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:27:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:41,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:41,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:41,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:41,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:41,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:27:41,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:41,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:27:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:41,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:27:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:41,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:41,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:41,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:41,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:41,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:27:41,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:41,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:41,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:27:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:41,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:41,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:27:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:41,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:41,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:41,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:41,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:41,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:27:41,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:41,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:27:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:41,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:27:41,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081230188] [2020-10-29 12:27:41,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:27:41,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 12:27:41,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827168341] [2020-10-29 12:27:41,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:27:41,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:27:41,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:27:41,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:27:41,987 INFO L87 Difference]: Start difference. First operand 2340 states and 3204 transitions. Second operand 13 states. [2020-10-29 12:27:42,522 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-29 12:27:42,827 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 12:27:43,621 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-29 12:27:43,779 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-29 12:27:43,973 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-29 12:27:44,133 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-29 12:27:44,381 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-29 12:27:44,653 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-29 12:27:45,087 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-29 12:27:45,306 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-29 12:27:45,558 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-29 12:27:45,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:45,870 INFO L93 Difference]: Finished difference Result 3507 states and 4850 transitions. [2020-10-29 12:27:45,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:27:45,871 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-29 12:27:45,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:45,889 INFO L225 Difference]: With dead ends: 3507 [2020-10-29 12:27:45,889 INFO L226 Difference]: Without dead ends: 2988 [2020-10-29 12:27:45,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:27:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-10-29 12:27:46,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 2384. [2020-10-29 12:27:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2384 states. [2020-10-29 12:27:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 3274 transitions. [2020-10-29 12:27:46,146 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 3274 transitions. Word has length 67 [2020-10-29 12:27:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:46,146 INFO L481 AbstractCegarLoop]: Abstraction has 2384 states and 3274 transitions. [2020-10-29 12:27:46,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:27:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 3274 transitions. [2020-10-29 12:27:46,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 12:27:46,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:46,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:27:46,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:27:46,148 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:46,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:46,148 INFO L82 PathProgramCache]: Analyzing trace with hash 995183200, now seen corresponding path program 1 times [2020-10-29 12:27:46,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:46,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151763710] [2020-10-29 12:27:46,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:46,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:46,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:46,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:49,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:49,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 12:27:49,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:27:49,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2949 [2020-10-29 12:27:49,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:49,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:27:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 12:27:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:27:49,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:49,383 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:27:49,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:27:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:49,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:49,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:49,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:27:49,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:49,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:27:49,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:49,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:49,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:49,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:27:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:49,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:27:49,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:27:49,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:49,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:27:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:49,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:27:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:49,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:49,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:49,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:49,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:49,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:27:49,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:49,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:49,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:27:49,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:27:49,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:27:49,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:49,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:27:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:49,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:49,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:49,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:27:49,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:49,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:27:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:49,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:49,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:27:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:49,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:49,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:49,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:49,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:27:49,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:49,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:49,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:49,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:27:49,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:49,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:49,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:27:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:49,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:49,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:49,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:27:49,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:27:49,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:49,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-29 12:27:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:27:49,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151763710] [2020-10-29 12:27:49,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:27:49,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:27:49,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757083509] [2020-10-29 12:27:49,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:27:49,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:27:49,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:27:49,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:27:49,655 INFO L87 Difference]: Start difference. First operand 2384 states and 3274 transitions. Second operand 9 states. [2020-10-29 12:27:49,941 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 12:27:51,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:51,968 INFO L93 Difference]: Finished difference Result 4938 states and 6824 transitions. [2020-10-29 12:27:51,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:27:51,969 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-29 12:27:51,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:51,988 INFO L225 Difference]: With dead ends: 4938 [2020-10-29 12:27:51,988 INFO L226 Difference]: Without dead ends: 3325 [2020-10-29 12:27:51,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:27:52,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2020-10-29 12:27:52,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 3290. [2020-10-29 12:27:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3290 states. [2020-10-29 12:27:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 4464 transitions. [2020-10-29 12:27:52,357 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 4464 transitions. Word has length 68 [2020-10-29 12:27:52,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:52,359 INFO L481 AbstractCegarLoop]: Abstraction has 3290 states and 4464 transitions. [2020-10-29 12:27:52,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:27:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 4464 transitions. [2020-10-29 12:27:52,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 12:27:52,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:52,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:27:52,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:27:52,360 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:52,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:52,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1555316310, now seen corresponding path program 1 times [2020-10-29 12:27:52,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:52,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534606899] [2020-10-29 12:27:52,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:52,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:52,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:53,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:53,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 12:27:53,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:27:53,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-29 12:27:53,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:53,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:27:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:27:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:27:53,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:53,617 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:27:53,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:27:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:53,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:53,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:53,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:27:53,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:53,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:27:53,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:53,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:53,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:53,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:53,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:53,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:53,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:27:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:53,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:53,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:53,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:27:53,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:27:53,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:53,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:27:53,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:53,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:27:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:53,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:53,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:53,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:53,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:27:53,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:53,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:27:53,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:53,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:27:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:53,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:53,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:53,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:53,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:53,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:27:53,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:53,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:53,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:27:53,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:27:53,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:27:53,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:27:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:53,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:53,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:53,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:53,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:53,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:27:53,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:53,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:53,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:27:53,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:53,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:27:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:53,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:53,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:53,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:27:53,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:53,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:27:53,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:53,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-29 12:27:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:53,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:27:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:27:53,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534606899] [2020-10-29 12:27:53,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:27:53,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:27:53,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934064483] [2020-10-29 12:27:53,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:27:53,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:27:53,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:27:53,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:27:53,863 INFO L87 Difference]: Start difference. First operand 3290 states and 4464 transitions. Second operand 9 states. [2020-10-29 12:27:54,172 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 12:27:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:56,317 INFO L93 Difference]: Finished difference Result 8968 states and 12221 transitions. [2020-10-29 12:27:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:27:56,318 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-29 12:27:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:56,352 INFO L225 Difference]: With dead ends: 8968 [2020-10-29 12:27:56,352 INFO L226 Difference]: Without dead ends: 5721 [2020-10-29 12:27:56,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:27:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5721 states. [2020-10-29 12:27:57,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5721 to 5718. [2020-10-29 12:27:57,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5718 states. [2020-10-29 12:27:57,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 7623 transitions. [2020-10-29 12:27:57,072 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 7623 transitions. Word has length 68 [2020-10-29 12:27:57,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:57,072 INFO L481 AbstractCegarLoop]: Abstraction has 5718 states and 7623 transitions. [2020-10-29 12:27:57,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:27:57,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 7623 transitions. [2020-10-29 12:27:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 12:27:57,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:57,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:27:57,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:27:57,074 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:57,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:57,075 INFO L82 PathProgramCache]: Analyzing trace with hash -823905504, now seen corresponding path program 1 times [2020-10-29 12:27:57,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:57,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390263567] [2020-10-29 12:27:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:57,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:57,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 12:27:57,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:57,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-29 12:27:57,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:57,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:27:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 12:27:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:27:57,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:57,697 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:27:57,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:27:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:57,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:57,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:57,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:27:57,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:57,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:27:57,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:57,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:57,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:57,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:57,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:57,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:57,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:27:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:57,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:57,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:57,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:27:57,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:57,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:27:57,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:57,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:57,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:27:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:57,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:57,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:57,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:57,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:57,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:27:57,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:57,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:57,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:57,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:27:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:57,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:57,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:57,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:57,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:57,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:27:57,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:57,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:57,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:57,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:57,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:57,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:57,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:27:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:57,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:57,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:27:57,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:57,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:27:57,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:57,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:57,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:27:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:57,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:57,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:57,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:27:57,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:27:57,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:57,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:27:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:27:57,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:27:57,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390263567] [2020-10-29 12:27:57,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:27:57,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 12:27:57,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139514775] [2020-10-29 12:27:57,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:27:57,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:27:57,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:27:57,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:27:57,946 INFO L87 Difference]: Start difference. First operand 5718 states and 7623 transitions. Second operand 12 states. [2020-10-29 12:27:58,962 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 12:27:59,235 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 12:27:59,527 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 12:27:59,826 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-29 12:28:00,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:28:00,830 INFO L93 Difference]: Finished difference Result 6153 states and 8374 transitions. [2020-10-29 12:28:00,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:28:00,831 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-29 12:28:00,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:28:00,872 INFO L225 Difference]: With dead ends: 6153 [2020-10-29 12:28:00,872 INFO L226 Difference]: Without dead ends: 6150 [2020-10-29 12:28:00,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:28:00,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2020-10-29 12:28:01,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 5826. [2020-10-29 12:28:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5826 states. [2020-10-29 12:28:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 7709 transitions. [2020-10-29 12:28:01,496 INFO L78 Accepts]: Start accepts. Automaton has 5826 states and 7709 transitions. Word has length 68 [2020-10-29 12:28:01,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:28:01,497 INFO L481 AbstractCegarLoop]: Abstraction has 5826 states and 7709 transitions. [2020-10-29 12:28:01,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:28:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5826 states and 7709 transitions. [2020-10-29 12:28:01,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:28:01,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:28:01,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:28:01,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:28:01,500 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:28:01,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:28:01,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1924343117, now seen corresponding path program 1 times [2020-10-29 12:28:01,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:28:01,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170636692] [2020-10-29 12:28:01,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:28:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:01,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:01,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:01,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:02,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:02,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:04,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:06,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:06,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 12:28:06,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:28:06,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:28:06,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:06,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:28:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:28:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 12:28:06,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:06,854 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:28:06,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:28:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:06,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:06,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:06,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:28:06,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:06,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:28:06,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:06,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:06,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:28:06,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:28:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:06,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:06,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:28:06,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:28:06,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:06,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:06,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:28:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:28:06,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:28:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:06,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:07,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:07,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:07,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:07,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 12:28:07,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:07,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:28:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:28:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:28:07,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:07,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:28:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:07,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:07,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:07,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:07,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:07,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 12:28:07,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:07,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:28:07,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:28:07,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:28:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:07,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:07,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:07,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:07,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:28:07,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:07,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:07,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:28:07,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:07,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:28:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:07,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:07,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:07,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:28:07,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:07,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:28:07,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:07,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:28:07,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:07,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:28:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:07,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:07,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:07,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:28:07,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:07,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:28:07,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:07,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:07,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:07,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:07,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:28:07,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:07,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:28:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:07,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:07,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:07,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:07,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:07,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:28:07,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:07,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:07,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:07,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:07,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:28:07,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:07,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:28:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:07,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:07,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:07,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:07,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:07,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:28:07,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:07,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:28:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:28:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:28:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 12:28:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:07,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:07,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:07,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:28:07,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:07,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:28:07,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:07,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-29 12:28:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:07,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:07,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 12:28:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:07,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:07,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:07,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:07,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:07,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:28:07,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:07,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:07,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:07,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:28:07,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:07,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 12:28:07,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170636692] [2020-10-29 12:28:07,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:28:07,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:28:07,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124281768] [2020-10-29 12:28:07,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:28:07,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:28:07,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:28:07,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:28:07,576 INFO L87 Difference]: Start difference. First operand 5826 states and 7709 transitions. Second operand 15 states. [2020-10-29 12:28:07,942 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-29 12:28:08,525 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 12:28:09,103 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2020-10-29 12:28:09,290 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-29 12:28:09,753 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-29 12:28:10,846 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-29 12:28:11,973 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 118 [2020-10-29 12:28:12,302 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-10-29 12:28:12,845 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 12:28:16,300 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 12:28:17,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:28:17,961 INFO L93 Difference]: Finished difference Result 23844 states and 31947 transitions. [2020-10-29 12:28:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 12:28:17,962 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 106 [2020-10-29 12:28:17,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:28:18,050 INFO L225 Difference]: With dead ends: 23844 [2020-10-29 12:28:18,050 INFO L226 Difference]: Without dead ends: 18072 [2020-10-29 12:28:18,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=509, Invalid=2247, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 12:28:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18072 states. [2020-10-29 12:28:20,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18072 to 16291. [2020-10-29 12:28:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16291 states. [2020-10-29 12:28:20,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16291 states to 16291 states and 21707 transitions. [2020-10-29 12:28:20,059 INFO L78 Accepts]: Start accepts. Automaton has 16291 states and 21707 transitions. Word has length 106 [2020-10-29 12:28:20,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:28:20,059 INFO L481 AbstractCegarLoop]: Abstraction has 16291 states and 21707 transitions. [2020-10-29 12:28:20,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:28:20,059 INFO L276 IsEmpty]: Start isEmpty. Operand 16291 states and 21707 transitions. [2020-10-29 12:28:20,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:28:20,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:28:20,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:28:20,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:28:20,069 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:28:20,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:28:20,069 INFO L82 PathProgramCache]: Analyzing trace with hash -321421455, now seen corresponding path program 1 times [2020-10-29 12:28:20,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:28:20,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867940357] [2020-10-29 12:28:20,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:28:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:20,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:20,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:22,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:25,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:25,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 12:28:25,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:28:25,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:28:25,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:25,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:28:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:28:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 12:28:25,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:25,419 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:28:25,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:28:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:25,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:25,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:25,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:28:25,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:25,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:28:25,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:25,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:25,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:28:25,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:28:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:25,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:25,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:28:25,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:25,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:28:25,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:25,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:25,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:28:25,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:28:25,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:28:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:25,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:25,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:25,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:25,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:25,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:28:25,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:25,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:28:25,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:28:25,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:28:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:25,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:25,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:25,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:25,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:25,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:28:25,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:25,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:28:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:28:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:28:25,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:28:25,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:28:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:25,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:25,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:25,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:25,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:25,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:28:25,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:25,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:28:25,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:28:25,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:28:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:25,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:25,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:25,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:28:25,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:25,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:28:25,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:25,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:28:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:28:25,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:25,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:28:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:25,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:25,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:25,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:28:25,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:25,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:28:25,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:25,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:25,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:25,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:28:25,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:28:25,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:28:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:25,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:25,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:25,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:25,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:25,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:28:25,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:25,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:28:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:28:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:28:25,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:28:25,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:28:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:25,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:25,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:25,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:28:25,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:25,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:28:25,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:25,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:25,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:28:25,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:28:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:28:25,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 12:28:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:25,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:25,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:25,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:25,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:28:25,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:25,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:28:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:28:25,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:28:25,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:25,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 12:28:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:25,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:25,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:25,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:25,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:25,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:28:25,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:25,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:28:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:28:25,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 12:28:26,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867940357] [2020-10-29 12:28:26,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:28:26,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:28:26,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857068233] [2020-10-29 12:28:26,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:28:26,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:28:26,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:28:26,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:28:26,011 INFO L87 Difference]: Start difference. First operand 16291 states and 21707 transitions. Second operand 15 states. [2020-10-29 12:28:26,586 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-29 12:28:26,970 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 12:28:28,032 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 12:28:28,329 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-29 12:28:28,773 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-29 12:28:29,000 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-29 12:28:29,413 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-29 12:28:29,955 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-29 12:28:30,188 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-29 12:28:30,755 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 12:28:31,753 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-29 12:28:32,699 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-29 12:28:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:28:35,191 INFO L93 Difference]: Finished difference Result 37829 states and 51417 transitions. [2020-10-29 12:28:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 12:28:35,192 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 106 [2020-10-29 12:28:35,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:28:35,286 INFO L225 Difference]: With dead ends: 37829 [2020-10-29 12:28:35,286 INFO L226 Difference]: Without dead ends: 23389 [2020-10-29 12:28:35,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=490, Invalid=1490, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 12:28:35,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23389 states. [2020-10-29 12:28:37,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23389 to 22849. [2020-10-29 12:28:37,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22849 states. [2020-10-29 12:28:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22849 states to 22849 states and 30619 transitions. [2020-10-29 12:28:38,037 INFO L78 Accepts]: Start accepts. Automaton has 22849 states and 30619 transitions. Word has length 106 [2020-10-29 12:28:38,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:28:38,038 INFO L481 AbstractCegarLoop]: Abstraction has 22849 states and 30619 transitions. [2020-10-29 12:28:38,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:28:38,038 INFO L276 IsEmpty]: Start isEmpty. Operand 22849 states and 30619 transitions. [2020-10-29 12:28:38,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:28:38,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:28:38,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:28:38,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:28:38,042 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:28:38,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:28:38,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1169808215, now seen corresponding path program 1 times [2020-10-29 12:28:38,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:28:38,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141693211] [2020-10-29 12:28:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:28:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:38,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:38,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:38,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:39,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:43,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 12:28:43,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:28:43,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:28:43,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:43,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:43,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:28:43,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 12:28:43,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 12:28:43,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:43,345 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:28:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:28:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:43,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:28:43,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:43,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:28:43,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:43,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:43,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:28:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:43,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:43,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:28:43,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:28:43,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:43,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:28:43,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:43,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:28:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:43,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:43,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:43,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:43,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:28:43,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:43,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:28:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:43,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:28:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:43,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:43,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:43,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:43,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:28:43,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:43,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:43,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:43,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:28:43,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:43,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:28:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:43,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:43,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:43,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:28:43,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:43,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:43,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:28:43,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:28:43,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:28:43,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:28:43,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:28:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:43,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:43,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:28:43,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:43,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:28:43,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:43,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:28:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:43,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:28:43,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:43,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:28:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:43,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:43,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:28:43,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:43,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:28:43,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:43,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:43,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:43,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:28:43,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:43,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:28:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:43,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:43,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:43,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:28:43,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:43,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:43,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:28:43,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:28:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:28:43,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:43,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:28:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:43,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:28:43,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:43,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:28:43,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:43,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:28:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:28:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:28:43,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:43,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 12:28:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:43,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:43,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:28:43,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:43,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:28:43,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:43,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:28:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:43,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:28:43,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:43,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 12:28:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:43,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:43,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:43,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:43,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:28:43,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:43,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:28:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:28:43,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 12:28:43,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141693211] [2020-10-29 12:28:43,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:28:43,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:28:43,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931703033] [2020-10-29 12:28:43,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:28:43,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:28:43,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:28:43,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:28:43,791 INFO L87 Difference]: Start difference. First operand 22849 states and 30619 transitions. Second operand 15 states. [2020-10-29 12:28:44,372 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-29 12:28:44,752 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 12:28:45,587 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 12:28:45,851 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-29 12:28:46,199 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-29 12:28:46,578 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-29 12:28:46,769 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-29 12:28:47,490 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-29 12:28:47,788 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 12:28:48,055 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 12:28:48,355 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 12:28:48,710 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 12:28:49,085 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 12:28:50,087 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-29 12:28:51,296 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-29 12:28:52,643 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-29 12:28:54,361 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 12:28:58,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:28:58,256 INFO L93 Difference]: Finished difference Result 66195 states and 89287 transitions. [2020-10-29 12:28:58,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-29 12:28:58,257 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 106 [2020-10-29 12:28:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:28:58,525 INFO L225 Difference]: With dead ends: 66195 [2020-10-29 12:28:58,525 INFO L226 Difference]: Without dead ends: 45302 [2020-10-29 12:28:58,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=900, Invalid=3792, Unknown=0, NotChecked=0, Total=4692 [2020-10-29 12:28:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45302 states. [2020-10-29 12:29:03,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45302 to 44486. [2020-10-29 12:29:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44486 states. [2020-10-29 12:29:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44486 states to 44486 states and 59788 transitions. [2020-10-29 12:29:03,236 INFO L78 Accepts]: Start accepts. Automaton has 44486 states and 59788 transitions. Word has length 106 [2020-10-29 12:29:03,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:29:03,237 INFO L481 AbstractCegarLoop]: Abstraction has 44486 states and 59788 transitions. [2020-10-29 12:29:03,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:29:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 44486 states and 59788 transitions. [2020-10-29 12:29:03,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:29:03,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:29:03,240 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:29:03,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:29:03,240 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:29:03,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:29:03,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1866772173, now seen corresponding path program 1 times [2020-10-29 12:29:03,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:29:03,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504044622] [2020-10-29 12:29:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:29:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:03,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:03,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:03,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:03,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:04,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:08,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:08,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 12:29:08,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:29:08,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:29:08,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:08,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:08,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:29:08,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 12:29:08,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 12:29:08,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:08,588 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:29:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:29:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:08,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:08,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:08,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:29:08,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:08,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:29:08,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:08,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:29:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:29:08,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:08,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:29:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:08,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:08,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:08,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:29:08,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:08,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:29:08,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:08,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:29:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:08,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:29:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:08,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:08,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:08,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:29:08,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:08,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:29:08,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:08,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:29:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:29:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:29:08,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:08,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:29:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:08,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:08,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:29:08,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:08,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:29:08,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:08,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:29:08,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:08,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:29:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:08,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:08,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:08,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:29:08,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:08,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:29:08,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:08,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:08,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:08,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:08,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:29:08,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:08,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:29:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:08,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:08,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:08,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:29:08,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:29:08,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:08,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:29:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:29:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:08,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:29:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:08,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:08,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:08,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:29:08,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:29:08,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:08,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:29:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:08,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:29:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:08,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:08,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:08,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:29:08,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:08,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:29:08,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:08,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:29:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:29:08,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:08,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:29:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:08,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:08,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:08,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:29:08,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:08,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:29:08,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:08,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:08,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:29:08,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:29:08,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:29:08,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:08,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 12:29:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:08,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:08,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:29:08,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:08,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:29:08,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:08,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:29:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:29:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:29:08,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:09,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 12:29:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:09,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:09,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:09,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:29:09,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:09,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:29:09,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:09,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:09,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:09,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:29:09,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:29:09,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 12:29:09,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504044622] [2020-10-29 12:29:09,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:29:09,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:29:09,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499410867] [2020-10-29 12:29:09,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:29:09,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:29:09,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:29:09,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:29:09,072 INFO L87 Difference]: Start difference. First operand 44486 states and 59788 transitions. Second operand 15 states. [2020-10-29 12:29:09,735 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-29 12:29:10,082 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 12:29:11,071 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 12:29:11,349 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-29 12:29:11,596 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-29 12:29:11,895 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-29 12:29:12,556 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-29 12:29:12,792 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-29 12:29:13,193 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-29 12:29:13,443 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-29 12:29:14,036 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 12:29:19,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:29:19,112 INFO L93 Difference]: Finished difference Result 62426 states and 84139 transitions. [2020-10-29 12:29:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 12:29:19,113 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 106 [2020-10-29 12:29:19,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:29:19,306 INFO L225 Difference]: With dead ends: 62426 [2020-10-29 12:29:19,307 INFO L226 Difference]: Without dead ends: 48138 [2020-10-29 12:29:19,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=439, Invalid=1283, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 12:29:19,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48138 states. [2020-10-29 12:29:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48138 to 47246. [2020-10-29 12:29:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47246 states. [2020-10-29 12:29:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47246 states to 47246 states and 63493 transitions. [2020-10-29 12:29:23,821 INFO L78 Accepts]: Start accepts. Automaton has 47246 states and 63493 transitions. Word has length 106 [2020-10-29 12:29:23,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:29:23,822 INFO L481 AbstractCegarLoop]: Abstraction has 47246 states and 63493 transitions. [2020-10-29 12:29:23,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:29:23,822 INFO L276 IsEmpty]: Start isEmpty. Operand 47246 states and 63493 transitions. [2020-10-29 12:29:23,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:29:23,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:29:23,826 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:29:23,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:29:23,826 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:29:23,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:29:23,827 INFO L82 PathProgramCache]: Analyzing trace with hash -2072372423, now seen corresponding path program 1 times [2020-10-29 12:29:23,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:29:23,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67190598] [2020-10-29 12:29:23,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:29:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:23,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:23,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:28,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:28,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 12:29:28,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:29:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:29:28,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:28,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:29:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:29:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 12:29:28,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:29,155 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 12:29:29,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:29:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:29,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:29,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:29,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:29:29,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:29:29,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:29,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:29:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:29:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:29,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:29:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:29,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:29,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:29,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:29:29,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:29,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:29:29,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:29,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:29:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:29,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:29:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:29,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:29,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:29,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:29:29,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:29:29,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:29,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:29:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:29,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:29:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:29,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:29,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:29:29,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:29:29,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:29,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:29:29,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:29,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:29:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:29,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:29,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:29,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:29:29,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:29,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:29:29,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:29,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:29:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:29:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:29:29,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:29,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:29:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:29,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:29,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:29,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:29:29,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:29,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:29:29,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:29,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:29,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:29,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:29,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:29:29,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:29,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:29:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:29,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:29,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:29,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:29:29,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:29,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:29:29,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:29,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:29:29,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:29,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:29:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:29,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:29,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:29,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:29:29,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:29:29,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:29,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:29:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:29:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:29:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:29,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:29:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:29,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:29,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:29:29,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:29:29,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:29,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:29:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-29 12:29:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:29:29,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:29,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 12:29:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:29,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:29,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:29,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:29:29,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:29,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:29:29,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:29,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:29:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:29:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:29:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:29,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 12:29:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:29,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:29,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:29,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:29:29,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:29,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:29:29,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:29,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:29:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 12:29:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:29:29,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 12:29:29,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67190598] [2020-10-29 12:29:29,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:29:29,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:29:29,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679569108] [2020-10-29 12:29:29,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:29:29,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:29:29,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:29:29,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:29:29,662 INFO L87 Difference]: Start difference. First operand 47246 states and 63493 transitions. Second operand 15 states. [2020-10-29 12:29:30,064 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-29 12:29:30,612 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 12:29:31,656 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 116 [2020-10-29 12:29:31,866 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-29 12:29:32,304 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-29 12:29:34,145 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 118 [2020-10-29 12:29:34,464 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-29 12:29:36,136 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:29:45,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:29:45,407 INFO L93 Difference]: Finished difference Result 184118 states and 243329 transitions. [2020-10-29 12:29:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 12:29:45,408 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 108 [2020-10-29 12:29:45,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:29:46,407 INFO L225 Difference]: With dead ends: 184118 [2020-10-29 12:29:46,409 INFO L226 Difference]: Without dead ends: 147032 [2020-10-29 12:29:46,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=356, Invalid=1450, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 12:29:46,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147032 states. [2020-10-29 12:29:58,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147032 to 142115. [2020-10-29 12:29:58,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142115 states. [2020-10-29 12:29:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142115 states to 142115 states and 187737 transitions. [2020-10-29 12:29:59,575 INFO L78 Accepts]: Start accepts. Automaton has 142115 states and 187737 transitions. Word has length 108 [2020-10-29 12:29:59,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:29:59,575 INFO L481 AbstractCegarLoop]: Abstraction has 142115 states and 187737 transitions. [2020-10-29 12:29:59,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:29:59,575 INFO L276 IsEmpty]: Start isEmpty. Operand 142115 states and 187737 transitions. [2020-10-29 12:29:59,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:29:59,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:29:59,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:29:59,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:29:59,582 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:29:59,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:29:59,582 INFO L82 PathProgramCache]: Analyzing trace with hash -593210937, now seen corresponding path program 1 times [2020-10-29 12:29:59,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:29:59,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359388600] [2020-10-29 12:29:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:29:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:59,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:59,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:59,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:30:01,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking...